Vigorous achalasia: Zebra amongst horses.

Vigorous achalasia is an oesophageal disorder with clinical and radiological characteristics of classic achalasia and diffuse oesophageal spasm. It is a rarely reported variant. A 60-year-old gentleman presented with complaints of difficulty in swallowing, regurgitation and chest pain for the past 10 years. His symptoms persisted despite the use of proton pump inhibitors. On endoscopy and barium swallow, the diagnosis of vigorous achalasia was confirmed. It is a rare variant of classic achalasia usually misdiagnosed as diffuse oesophageal spasm.